Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d5208ab3f89068e…

MALICIOUS

PDF

80.9 KB Created: 2020-09-28 22:39:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 02914475dd30a4455cb56a7141561958 SHA-1: 59b3f219c2d720d72acb019a61f5a3e4e1bce39e SHA-256: 2d5208ab3f89068ea0a4faf9a66b9823343d6799fcb38fe6d5634f42044bb6d0
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the redirector heuristic. This suggests the PDF is designed to redirect users to malicious infrastructure, likely for phishing or scam purposes. No scripts were extracted, limiting the analysis of direct execution capabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ggtraff.ru/mozel?keyword=alkaptonuria+diet+pdf
    • http://files.art2day.co.uk/uploads/1/3/0/8/130874295/201e32d0c60d.pdf
    • http://files.randengineering.ca/uploads/1/3/0/7/130776211/lopobu.pdf
    • http://lebanif.artpetch.com/uploads/1/3/0/8/130814238/sinuwej_rumusemudegil_xetefezowafas.pdf
    • https://site-1036659.mozfiles.com/files/1036659/94150127041.pdf
    • https://site-1036868.mozfiles.com/files/1036868/gujomexakula.pdf
    • https://cdn.shopify.com/s/files/1/0430/6803/1143/files/sevier_county_schools_central_office.pdf
    • https://cdn.shopify.com/s/files/1/0450/5636/0600/files/precedence_and_associativity_of_operators_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0481/5801/5637/files/nefok.pdf
    • https://7b9c75c3-eac6-4a63-b9ea-efb6b25704a3.filesusr.com/ugd/9ff9b8_a7ff3dfb8ea1482bb22ef99366195b10.pdf?index=true
    • https://ac77e0bb-15f6-480c-b336-a055dd335edc.filesusr.com/ugd/3bbd68_004dac5829ec46debedcfe8d9dfb035e.pdf?index=true
    • https://10b97be0-9c97-4236-b7bd-7a264e347ce6.filesusr.com/ugd/6e13d9_bf8d26684df746c4aeadb46247b44663.pdf?index=true
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eb72.bin
09e2222c9e532b8f53233e60e1ee4f89f9593fe99d1e664a9e7a426bdacf23ea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB72 4908 bytes
font_01_sfnt_off0000fc36.bin
a31734fa7269c9df05f2fcde787456e0a93d560c73a8efcaa6fa93f350e422a4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC36 10956 bytes
font_02_sfnt_off000121cf.bin
99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121CF 16060 bytes

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